Lamp



FIG. 1 is a front view of “a lamp” showing my design;

FIG. 2 is a rear side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

In the above Figures, the portion that is shown in broken lines is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design for “a lamp”, as shown and described. 